diff --git a/7.map.go b/7.map.go
index e69de29..4bed72f 100644
--- a/7.map.go
+++ b/7.map.go
@@ -0,0 +1,54 @@
+package main
+
+import (
+	"fmt"
+)
+
+func main() {
+	map_()
+}
+
+func map_() {
+	var UserMap map [int]string = map[int]string{
+		1: "skimrme",
+		2: "neko",
+		3: "kami",
+		4: "",
+	}	
+	fmt.Println(UserMap)
+	fmt.Println(UserMap[1], UserMap[2])
+	fmt.Println(UserMap[4])   // 可以读取没有的值
+	fmt.Printf("%#v\n", UserMap[5])   // 空字符串可以打印
+	
+	// 判断值
+	//value := UserMap[4]
+	value, ok := UserMap[4]
+	fmt.Println(value,ok)
+	// false 所以没有
+
+	// 改变user
+	UserMap[1] = "lukychen"
+	fmt.Println(UserMap)
+
+	// 把kami踢出
+	delete(UserMap, 3)
+	fmt.Println(UserMap)
+
+	// map 初始化
+	// 1. var aMap = map[string]string{}
+	// 2. var aMap = make(map[string]string)
+	// 建立空初始化
+	var aMap = map[string]string{}
+	// 建立有值初始化
+	/* 
+	var aMap = map[string]string{
+		"123": "12",
+	} 
+	*/
+
+	//var aMap = map[string]string{}
+
+
+	aMap ["name"] = "skimrme"
+	fmt.Println(aMap)
+}
\ No newline at end of file
diff --git a/8.switch语句.go b/8.switch语句.go
new file mode 100644
index 0000000..a4b13cf
--- /dev/null
+++ b/8.switch语句.go
@@ -0,0 +1,30 @@
+package main
+
+import (
+	"fmt"
+)
+
+func main() {
+	switch_()
+}
+
+func switch_() {
+	var age int
+	fmt.Println("请输入你的年龄")
+	fmt.Scan(&age)
+
+	switch   {
+	case age <= 0:
+		fmt.Println("你唬谁呢！！！")
+	case age <= 17:
+		fmt.Println("我不信！！！")
+	case age <= 20:
+		fmt.Println("里边请！！！")
+		fallthrough //  继续执行代码
+	case age <= 35:	
+		fmt.Println("里边请！！！")
+	}
+
+	// 第二种用法
+	//var week int
+}
\ No newline at end of file